JP6625962B2 - 光酸発生剤 - Google Patents
光酸発生剤 Download PDFInfo
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- JP6625962B2 JP6625962B2 JP2016242701A JP2016242701A JP6625962B2 JP 6625962 B2 JP6625962 B2 JP 6625962B2 JP 2016242701 A JP2016242701 A JP 2016242701A JP 2016242701 A JP2016242701 A JP 2016242701A JP 6625962 B2 JP6625962 B2 JP 6625962B2
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- polycyclic
- monocyclic
- organic
- acid
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- 125000002950 monocyclic group Chemical group 0.000 claims description 37
- 125000003118 aryl group Chemical group 0.000 claims description 35
- 239000000178 monomer Substances 0.000 claims description 33
- 229920000642 polymer Polymers 0.000 claims description 32
- -1 sulfonium cation Chemical class 0.000 claims description 31
- 229910052739 hydrogen Inorganic materials 0.000 claims description 28
- 150000001875 compounds Chemical class 0.000 claims description 25
- 239000001257 hydrogen Substances 0.000 claims description 24
- 125000003709 fluoroalkyl group Chemical group 0.000 claims description 21
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 20
- 125000000962 organic group Chemical group 0.000 claims description 20
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- 229910052731 fluorine Inorganic materials 0.000 claims description 18
- 125000005647 linker group Chemical group 0.000 claims description 18
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- 125000000217 alkyl group Chemical group 0.000 claims description 15
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- 125000003837 (C1-C20) alkyl group Chemical group 0.000 claims description 13
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- 229910052736 halogen Inorganic materials 0.000 claims description 11
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- 125000000027 (C1-C10) alkoxy group Chemical group 0.000 claims description 6
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- SNOOUWRIMMFWNE-UHFFFAOYSA-M sodium;6-[(3,4,5-trimethoxybenzoyl)amino]hexanoate Chemical compound [Na+].COC1=CC(C(=O)NCCCCCC([O-])=O)=CC(OC)=C1OC SNOOUWRIMMFWNE-UHFFFAOYSA-M 0.000 claims 1
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- 101000692259 Homo sapiens Phosphoprotein associated with glycosphingolipid-enriched microdomains 1 Proteins 0.000 description 3
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- 102100026066 Phosphoprotein associated with glycosphingolipid-enriched microdomains 1 Human genes 0.000 description 3
- 101000987219 Sus scrofa Pregnancy-associated glycoprotein 1 Proteins 0.000 description 3
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- POXIZPBFFUKMEQ-UHFFFAOYSA-N 2-cyanoethenylideneazanide Chemical group [N-]=C=[C+]C#N POXIZPBFFUKMEQ-UHFFFAOYSA-N 0.000 description 2
- QDFXRVAOBHEBGJ-UHFFFAOYSA-N 3-(cyclononen-1-yl)-4,5,6,7,8,9-hexahydro-1h-diazonine Chemical compound C1CCCCCCC=C1C1=NNCCCCCC1 QDFXRVAOBHEBGJ-UHFFFAOYSA-N 0.000 description 2
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- 239000000377 silicon dioxide Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-O sulfonium Chemical compound [SH3+] RWSOTUBLDIXVET-UHFFFAOYSA-O 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- LLFNZCQAFAVOLK-UHFFFAOYSA-N tert-butyl 4-oxo-1h-pyridine-2-carboxylate Chemical compound CC(C)(C)OC(=O)C1=CC(O)=CC=N1 LLFNZCQAFAVOLK-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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- C07C255/34—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms having cyano groups bound to acyclic carbon atoms of a carbon skeleton containing at least one six-membered aromatic ring with cyano groups linked to the six-membered aromatic ring, or to the condensed ring system containing that ring, by unsaturated carbon chains
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Description
EWGが、電子求引基であり、
Yが、単結合または結合基であり、
Rが、水素、直鎖または分岐C1−20アルキル基、直鎖または分岐C2−20アルケニル基、単環式または多環式C3−20シクロアルキル基、単環式または多環式C3−20シクロアルケニル基、単環式または多環式C3−20ヘテロシクロアルキル基、単環式または多環式C3−20ヘテロシクロアルケニル基、単環式または多環式C6−20アリール基、単環式または多環式C1−20ヘテロアリール基であり、水素を除くそれらの各々が、置換または非置換であり、
M+が、式(VII)を有する有機スルホニウムカチオンまたは有機ヨードニウムカチオンであり、
R0が、C1−20アルキル基、C1−20フルオロアルキル基、C3−20シクロアルキル基、C3−20フルオロシクロアルキル基、C2−20アルケニル基、C2−20フルオロアルケニル基、C6−30アリール基、C6−30フルオロアリール基、C1−30ヘテロアリール基、C7−30アラルキル基、C7−30フルオロアラルキル基、C2−30ヘテロアラルキル基、またはC2−30フルオロヘテロアラルキル基であり、それらの各々が、置換または非置換であり、
Arが、C6−30置換芳香族有機基であり、
Arが任意に、R0と結合している。
Arは、C6−30置換芳香族有機基であり、
Arは任意に、R0と結合する。
X5及びX6は各々、C(CN)2であり得、
Rは、水素であり得、
Yは、単結合であり得る。
各R2は、分離しているかまたは単結合もしくは結合基を介して他方の基R2と結合して環を形成し、
Arは、置換または非置換のC6−30芳香族有機基である。
Xは、IまたはSであり、
各R3は独立して、ハロゲン、−CN、−OH、C1−10アルキル基、C1−10フルオロアルキル基、C1−10アルコキシ基、C1−10フルオロアルコキシ基、C3−10シクロアルキル基、C3−10フルオロシクロアルキル基、C3−10シクロアルコキシ基、またはC3−10フルオロシクロアルコキシ基であり、
各nは、0、1、2、3、4、及び5の整数であるが、但し、XがIのとき、少なくとも1つのnは、0ではないことを条件とし、
mは、2または3の整数であるが、但し、XがIのとき、mは2であり、XがSである場合、mは3であることを条件とする。この実施形態において、ヨードニウムカチオンは、少なくとも1つの置換基が芳香族環に存在することを必要とする。
R4、R5、R6、R7、R8、R9、及びR10は各々独立して、ハロゲン、−CN、−OH、C1−10アルキル基、C1−10フルオロアルキル基、C1−10アルコキシ基、C1−10フルオロアルコキシ基、C3−10シクロアルキル基、C3−10フルオロシクロアルキル基、C3−10シクロアルコキシ基、またはC3−10フルオロシクロアルコキシ基であり、ハロゲン、−CN、及び−OHを除くそれらの各々は、置換または非置換であり得、
Jは、単結合またはS、O、及びC=Oから選択される結合基であり、
pは各々独立して、0、1、2、3、または4の整数であり、
rは、0、1、2、3、4、及び5の整数であり、
s及びtは各々独立して、0、1、2、3、及び4の整数である。
光酸発生剤を、以下の手順に従ってリソグラフィー的に評価する。光レジストを、表1に示される構成成分及び割合を使用して配合する。市販される光レジストポリマーA2が全ての実施例で使用される。ポリマーA2は、以下に示されるモノマーM1、M2、M3、M4、及びM5を組み込むペンタポリマーであり、M1/M2/M3/M4/M5のモルパーセントが、モノマーの合計100モルパーセントに対して20/20/30/20/10である。ポリマーの分子量(Mw)は、モル当たり8,000グラム(g/mol)であった。Omnovaから入手可能なPAG、塩基(t−ブチルオキシカルボニル−4−ヒドロキシピリジン、TBOC−4HP)、及び表面レベリング剤(界面活性剤)PF656は、ポリマーである固体の均衡を保ちながら、100%の固体含有量に基づく重量パーセントである。これらの配合物中で使用される溶剤は、PGMEA(S1)及びHBM(S2)である。両方の実施例の固体の最終含有量は、4重量パーセント(重量%)であった。最終配合物中の溶剤S1:S2の重量比は、1:1であった。比較例ならびに実施例A、B、及びCの光レジスト配合組成物は、以下の表1で示される。
Claims (13)
- 式(I)を有する光酸発生剤化合物であって、
EWGが、ハロゲン、−CF3、−CCl3、−CN、−NO2、−C(=O)R21、−C(=O)OR22、−C(=O)NH2、−SO3H、及び−SO2R23からなる群から選択され、R21が水素、C6−30芳香族有機基、またはC1−30ヘテロ芳香族有機基であり、R22及びR23が各々独立して、水素、O、S、N、及びFから選択されるヘテロ原子を場合によって含むC1−30脂肪族有機基、C6−30芳香族有機基、またはC1−30ヘテロ芳香族有機基である電子求引基であり、
Yが、単結合、−C(R 30 ) 2 −(各R 30 は独立して、水素またはC 1−6 アルキル基である)、エーテル基、炭酸塩基−O−C(=O)−O−、アミン基−NH−、尿素基、硫酸塩基−O−S(=O)−O−、N−オキシド基−N(=O)−、または前述のうちの少なくとも2つの組み合わせであり、
Rが、水素、直鎖もしくは分岐C1−20アルキル基、直鎖もしくは分岐C2−20アルケニル基、単環式もしくは多環式C3−20シクロアルキル基、単環式もしくは多環式C3−20シクロアルケニル基、単環式もしくは多環式C3−20ヘテロシクロアルキル基、または単環式もしくは多環式C3−20ヘテロシクロアルケニル基であり、水素を除くそれらの各々が、置換基によって置換されているか、または非置換であり、前記置換基は、Cl、Br、I、ヒドロキシル、アミノ、チオール、カルボキシル、カルボン酸塩、エステル、アミド、ニトリル、硫化物、二硫化物、ニトロ、C 1−20 アルキル、C 1−20 シクロアルキル、C 1−20 アルケニル、C 1−20 アルコキシ、及びC 2−20 アルケノキシからなる群から選択され、
M+が、有機スルホニウムカチオンまたは式(VII)を有する有機ヨードニウムカチオンであり、
R0が、C1−20アルキル基、C1−20フルオロアルキル基、C3−20シクロアルキル基、C3−20フルオロシクロアルキル基、C2−20アルケニル基、C2−20フルオロアルケニル基、C6−30アリール基、C6−30フルオロアリール基、C1−30ヘテロアリール基、C7−30アラルキル基、C7−30フルオロアラルキル基、C2−30ヘテロアラルキル基、またはC2−30フルオロヘテロアラルキル基であり、それらの各々が、置換または非置換であり、
Arが、C6−30置換芳香族有機基であり、
Arが任意に、R0と結合している、光酸発生剤化合物。 - 式(II)または(III)を有し、
X1、X2、X3、及びX4が各々独立して、−F、−CN、−NO2、−C(=O)R24、−C(=O)OR25、−SO2R26、及びCRfから選択され、R24、R25、及びR26が各々独立して、O、S、N、及びFから選択されるヘテロ原子を場合によって含むC1−30脂肪族有機基、C6−30芳香族有機基、またはC1−30ヘテロ芳香族有機基であり、Rfが、C1−C30フルオロアルキル基である電子求引基であり、
X5及びX6が各々独立して、C(CN)2、C(NO2)2、C(COR27)2、C(CO2R28)2、C(SO2R29)2、及びC(Rf)2から選択される電子求引基であり、式中、R27、R28、及びR29が各々独立して、O、S、N、及びFから選択されるヘテロ原子を場合によって含むC1−30脂肪族有機基、C6−30芳香族有機基、またはC1−30ヘテロ芳香族有機基であり、Rfが、C1−C30フルオロアルキル基であり、
Z1及びZ2が各々独立して、水素、直鎖もしくは分岐C1−50アルキル基、単環式もしくは多環式C3−50シクロアルキル基、単環式もしくは多環式C3−50ヘテロシクロアルキル基、単環式もしくは多環式C6−50アリール基、単環式もしくは多環式C5−20ヘテロアリール基、またはそれらの組み合わせであり、基Z1及びZ2が任意に、互いに結合して環を形成し、
Yが、単結合または−C(R 30 ) 2 −、−N(R 31 )−、−O−、−S−、−S(=O) 2 −、−C(=O)−、及びそれらの組み合わせから選択される結合基であり、各R 30 及びR 31 が独立して、水素またはC 1−6 アルキル基であり、
Rが、水素、直鎖もしくは分岐C1−20アルキル基、直鎖もしくは分岐C2−20アルケニル基、単環式もしくは多環式C3−20シクロアルキル基、単環式もしくは多環式C3−20シクロアルケニル基、単環式もしくは多環式C3−20ヘテロシクロアルキル基、単環式もしくは多環式C3−20ヘテロシクロアルケニル基、単環式もしくは多環式C6−20アリール基、または単環式もしくは多環式C1−20ヘテロアリール基であり、水素を除くそれらの各々が、置換または非置換であり、
M+が、有機スルホニウムカチオンまたは式(VII)を有する有機ヨードニウムカチオンであり、
R0が、C1−20アルキル基、C1−20フルオロアルキル基、C3−20シクロアルキル基、C3−20フルオロシクロアルキル基、C2−20アルケニル基、C2−20フルオロアルケニル基、C6−30アリール基、C6−30フルオロアリール基、C1−30ヘテロアリール基、C7−30アラルキル基、C7−30フルオロアラルキル基、C2−30ヘテロアラルキル基、またはC2−30フルオロヘテロアラルキル基であり、それらの各々が、置換または非置換であり、
Arが、C6−30置換芳香族有機基であり、
Arが任意に、R0と結合しており、及び
各
- 式(III)において、
X5及びX6が各々、C(CN)2であり、
Rが、多環式C3−20シクロアルキル基である、
請求項2に記載の光酸発生剤化合物。 - 式(III)において、
X5及びX6が各々、C(CN)2であり、
Rが、水素であり、
Yが、単結合である、
請求項2に記載の光酸発生剤化合物。 - 前記有機スルホニウムカチオンが、式(V)を有し、
各R2が独立して、C1−20アルキル基、C1−20フルオロアルキル基、C3−20シクロアルキル基、C3−20フルオロシクロアルキル基、C2−20アルケニル基、C2−20フルオロアルケニル基、C6−20アリール基、C6−20フルオロアリール基、C1−20ヘテロアリール基、C7−20アラルキル基、C7−20フルオロアラルキル基、C2−20ヘテロアラルキル基、またはC2−20フルオロヘテロアラルキル基であり、それらの各々が、置換または非置換であり、
各R2が、分離しているかまたは単結合もしくは結合基を介して他方の基R2と結合しているかのどちらかであり、
Arが、置換または非置換のC6−30芳香族有機基である、請求項1〜5のいずれか一項に記載の光酸発生剤化合物。 - M+が、式(VI)を有する有機カチオンであり、
Xが、IまたはSであり、
各R3が独立して、ハロゲン、C1−10アルキル基、C1−10フルオロアルキル基、C1−10アルコキシ基、C1−10フルオロアルコキシ基、C3−10シクロアルキル基、C3−10フルオロシクロアルキル基、C3−10シクロアルコキシ基、C3−10フルオロシクロアルコキシ基、またはC6−10アルコキシカルボニルアルキレンオキシ基であり、
各nが、0、1、2、3、4、及び5の整数であるが、但し、XがIのとき、少なくとも1つのnが、0ではないことを条件とし、
mが、2または3の整数であるが、但し、XがIのとき、mが2であり、XがSである場合、mが3であることを条件とする、請求項1〜6のいずれか一項に記載の化合物。 - M+が、式(VII)または(VIII)を有する有機カチオンであり、
R4、R5、R6、R7、R8、R9、及びR10が各々独立して、ハロゲン、−CN、−OH、C1−10アルキル基、C1−10フルオロアルキル基、C1−10アルコキシ基、C1−10フルオロアルコキシ基、C3−10シクロアルキル基、C3−10フルオロシクロアルキル基、C3−10シクロアルコキシ基、またはC3−10フルオロシクロアルコキシ基であり、ハロゲン、−CN、及び−OHを除くそれらの各々が、置換または非置換であり、
Jが、単結合またはS、O、及びC=Oから選択される結合基であり、
pが各々独立して、0、1、2、3、または4の整数であり、
rが、0、1、2、3、4、及び5の整数であり、
s及びtが各々独立して、0、1、2、3、及び4の整数である、請求項1〜7のいずれか一項に記載の化合物。 - 重合性基を有する、請求項1〜8のいずれか一項に記載の光酸発生剤化合物。
- 請求項9に記載の重合性基を有する光酸発生剤化合物、及び酸感受性基を有する酸脱保護性モノマーの重合生成物であり、酸への曝露における前記酸感受性基の酸脱保護が塩基可溶性基を放出する、酸感受性ポリマー。
- 光レジスト組成物であって、
重合単位として酸感受性基を有する酸脱保護性モノマーを含み、酸への曝露における前記酸感受性基の脱保護が塩基可溶性基を放出する酸感受性ポリマーと、
溶剤と、
請求項1〜9のいずれか一項に記載の光酸発生剤化合物と、を含む、光レジスト組成物。 - 光レジスト組成物であって、
請求項10に記載の酸感受性ポリマーと、
溶剤と、を含む、光レジスト組成物。 - 電子装置を形成する方法であって、(a)請求項11または12に記載の光レジスト組成物の層を基材に適用することと、(b)前記光レジスト組成物層を活性化放射線にパターン露光することと、(c)前記露光された光レジスト組成物層を現像して、レジストレリーフ像を提供することと、を含む、方法。
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